NL7707852A - AUTOMATIC CARRYER FORM FACTOR CORRECTION SYSTEM OBTAINED WHEN READING AN INFORMATION CARRIER. - Google Patents

AUTOMATIC CARRYER FORM FACTOR CORRECTION SYSTEM OBTAINED WHEN READING AN INFORMATION CARRIER.

Info

Publication number
NL7707852A
NL7707852A NL7707852A NL7707852A NL7707852A NL 7707852 A NL7707852 A NL 7707852A NL 7707852 A NL7707852 A NL 7707852A NL 7707852 A NL7707852 A NL 7707852A NL 7707852 A NL7707852 A NL 7707852A
Authority
NL
Netherlands
Prior art keywords
carryer
reading
automatic
form factor
information carrier
Prior art date
Application number
NL7707852A
Other languages
Dutch (nl)
Original Assignee
Thomson Brandt Sa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Brandt Sa filed Critical Thomson Brandt Sa
Publication of NL7707852A publication Critical patent/NL7707852A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • H04N5/931—Regeneration of the television signal or of selected parts thereof for restoring the level of the reproduced signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/93—Regeneration of the television signal or of selected parts thereof
    • H04N5/94—Signal drop-out compensation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
  • Television Signal Processing For Recording (AREA)
NL7707852A 1976-07-16 1977-07-14 AUTOMATIC CARRYER FORM FACTOR CORRECTION SYSTEM OBTAINED WHEN READING AN INFORMATION CARRIER. NL7707852A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7621819A FR2358797A1 (en) 1976-07-16 1976-07-16 AUTOMATIC CORRECTION SYSTEM OF THE CARRIER WAVE FORM FACTOR RESULTING FROM READING AN INFORMATION MEDIA

Publications (1)

Publication Number Publication Date
NL7707852A true NL7707852A (en) 1978-01-18

Family

ID=9175819

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7707852A NL7707852A (en) 1976-07-16 1977-07-14 AUTOMATIC CARRYER FORM FACTOR CORRECTION SYSTEM OBTAINED WHEN READING AN INFORMATION CARRIER.

Country Status (7)

Country Link
US (1) US4142208A (en)
JP (1) JPS5337319A (en)
CA (1) CA1106493A (en)
DE (1) DE2732188A1 (en)
FR (1) FR2358797A1 (en)
GB (1) GB1590801A (en)
NL (1) NL7707852A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240853A1 (en) * 1981-11-11 1983-05-19 N.V. Philips' Gloeilampenfabrieken, 5621 Eindhoven CIRCUIT FOR CONVERTING AN INFORMATION SIGNAL TO A RECTANGULAR SIGNAL

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044603B1 (en) * 1978-03-27 1985-07-10 Discovision Associates Apparatus and method for writing a signal information track on a disc
US4312013A (en) * 1979-09-19 1982-01-19 Rca Corporation Non-linear aperture correction circuit
JPS58190190A (en) * 1982-04-30 1983-11-07 Victor Co Of Japan Ltd Secondary distortion reducing device of frequency modulated wave signal
US4549288A (en) * 1982-12-20 1985-10-22 North American Philips Corporation Apparatus for enhancing the playback signal in an optical data recording system
DE3612266C1 (en) * 1986-04-11 1987-06-19 Philips Patentverwaltung Circuit arrangement for frequency-modulated image signals
JPH083942B2 (en) * 1986-11-20 1996-01-17 株式会社リコー Information recording / reproducing device
US5070495A (en) * 1989-04-12 1991-12-03 International Business Machines Corporation Write calibration for magnetooptic disk recorders
US5185733A (en) * 1990-03-01 1993-02-09 International Business Machines Corporation Calibrating lasers for optical recording using a maximal readback signal amplitude as a criterion
JPH04212723A (en) * 1990-07-31 1992-08-04 Toshiba Corp Information recording and reproducing device
JP2550772B2 (en) * 1990-10-26 1996-11-06 日本ビクター株式会社 Optical information recording medium disk reproducing device
US5204848A (en) * 1991-06-17 1993-04-20 International Business Machines Corporation Adjusting amplitude detection threshold by feeding back timing-data phase errors
US5268893A (en) * 1991-10-18 1993-12-07 International Business Machines Corporation Write power calibration utilizing least squares fit of read-back signals for moving media memory
US5680386A (en) * 1993-12-23 1997-10-21 Thomson-Csf Optical method and system for writing/reading information on a recording medium
FR2723243B1 (en) * 1994-07-26 1996-09-06 Thomson Csf DEVICE FOR RECORDING AND / OR PLAYING MAGNETIC HEADS AND ITS MANUFACTURING METHOD
FR2731808B1 (en) * 1995-03-14 1997-04-11 Thomson Csf OPTICAL FOCUS ADJUSTMENT SYSTEM
FR2739965B1 (en) * 1995-10-17 1997-11-07 Thomson Csf LIGHT TRANSCEIVER DEVICE AND OPTICAL READING SYSTEM
FR2786345B1 (en) 1998-11-24 2001-02-09 Thomson Csf QUANTUM ENCRYPTION DEVICE
FR2787232B1 (en) 1998-12-15 2001-02-23 Thomson Csf ANTI-HACK OPTICAL RECORDING DISC AND METHOD FOR PLAYING SUCH A DISC
FR2805071B1 (en) 2000-02-11 2002-05-03 Moulage Plastique De L Ouest COPY PROTECTED OPTICAL DISC AND PROTECTION METHOD FOR SUCH A DISC
US7149173B2 (en) * 2000-10-17 2006-12-12 Thales Medium for recording optically readable data, method for making same and optical system reproducing said data
FR2824905B1 (en) * 2001-05-15 2003-08-29 Thomson Csf FIBER OPTIC GYROMETER

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909608A (en) * 1972-12-26 1975-09-30 Thomson Csf Reproducing device for the optical reading out of a record carrying an embossed print
FR2266932B1 (en) * 1973-03-02 1977-09-02 Thomson Brandt
NL7402078A (en) * 1974-02-15 1975-08-19 Philips Nv DEVICE FOR READING A DISK-SHAPED REGISTRATION CARRIER.
US3988532A (en) * 1975-04-02 1976-10-26 Zenith Radio Corporation Arrangement for compensating duty factor variations in an optical video disc
US3988531A (en) * 1975-04-02 1976-10-26 Zenith Radio Corporation System for compensating for incorrect duty factor when reading out information stored in a video disc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240853A1 (en) * 1981-11-11 1983-05-19 N.V. Philips' Gloeilampenfabrieken, 5621 Eindhoven CIRCUIT FOR CONVERTING AN INFORMATION SIGNAL TO A RECTANGULAR SIGNAL

Also Published As

Publication number Publication date
DE2732188A1 (en) 1978-02-09
US4142208A (en) 1979-02-27
CA1106493A (en) 1981-08-04
FR2358797A1 (en) 1978-02-10
GB1590801A (en) 1981-06-10
JPS5337319A (en) 1978-04-06
FR2358797B1 (en) 1982-01-22

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Legal Events

Date Code Title Description
BV The patent application has lapsed